Code-Snippets-Functions/Execute a function on a child site/Relevanssi/woocommerce-popularity-and-price-sorting.txt

add_filter( 'relevanssi_orderby', 'woocommerce_relevanssi_orderby' );
function woocommerce_relevanssi_orderby( $orderby ) {
	if ( in_array( $orderby, array( 'price', 'price-desc' ), true ) ) {
		global $wp_query;
		$orderby = 'meta_value_num';
		$wp_query->query_vars['meta_key'] = '_regular_price';
	}
	if ( 'date ID' === $orderby ) {
		global $wp_query;
		$orderby = 'post_date';
	}
	if ( 'popularity' === $orderby ) {
		global $wp_query, $rlv_wc_order;
		$orderby = 'meta_value_num';
		$rlv_wc_order = 'desc';
		$wp_query->query_vars['meta_key'] = 'total_sales';
	}
	return $orderby;
}

add_filter( 'relevanssi_order', 'woocommerce_relevanssi_order' );
function woocommerce_relevanssi_order( $order ) {
	global $rlv_wc_order;
	if ( $rlv_wc_order ) {
		$order = $rlv_wc_order;
	}
	return $order;
}